Hello,

I have been off and on with tuning my engine. I wanted more power out of it, so I rebuilt the top end with this Summit Racing Kit: http://www.summitracing.com/parts/sme-k-355-400

The engine is a 1987 350 cid out of a K1500. The ECM that I am using is out of the matching vehicle and the PROM has a sticker with "ACSN" covering the erase hole. My question is, am I using the correct files in TunerPro? The engine seems to want a lot of timing to run happily. I am close to the mechanical limit of the distributor at the top end of the table (3600 rpm).

BCC Lookup gave me the following information:

BCC: ACSN
Year: 1987
Release Date: 31576
Eprom: 16069997
ECM: 1227747
Prom ID: 9998
Scan ID: 881
Platform: R2
Engine: L05
Displacement: 5.7
Trans: M20
Trans Type: MAN

With that, I am using the ASDX 88 C-K bin file, $42-1227747 XDF file, and $42-1227747-V5 ADX file. When reading the stock chip, the timing table is all zeros. Should I be concerned with this?

Kris